Dating techniques com
Dating methods continue to evolve and improve over time…
Prior to the development of radiocarbon dating in the late 1940s, archaeologists relied primarily on historical records and the position of archaeological finds to determine the relative order of past events.
In other words, they may no longer be in their primary context.
When the bones of our early ancestors are found in the same geological strata as those of other animals that are known to have lived only during a specific time period in the past, we assume that these ancestors must also have come from that time.
Depending on how electrons are released from their traps, luminescence dating techniques can be separated as follows: All of these techniques can be applied to date sediment samples from archaeological sites, although OSL and IRSL are the methods of choice.
However, because the amount of C in the atmosphere has not remained constant over time, scientists have used other dating approaches, such as dendrochronology (dating wooden samples using tree rings), to calibrate radiocarbon dates.
can be used to tell us whether or not the animals they were from actually lived at about the same time.